Kaitlyn Dever, from left, Olivia Wilde, Beanie Feldstein arrive at the Billboard Music Awards on Wednesday, May 1 at the MGM Grand Garden Arena in Las Vegas. (Richard Shotwell/Richard Shotwell/Invision/AP)

Olivia Wilde is smart, and fun, and probably not backing down anytime soon.

The actress-turned-director told Variety she was devastated to learn an airline was showing a version of her directorial debut “Booksmart” that doesn’t show a pivotal sex scene between two women.

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“There’s censorship, airline to airline, of films, which there must be some kind of governing board to determine,” Wilde, 35, explained at the Governors Awards Sunday. “We rate it a certain way. If it’s not X-rated, surely it’s acceptable on an airplane.”

The “Life Itself” mother of two then drew comparisons between the frequent brutality shown on-screen and consensual sex between women.

“There’s insane violence of bodies being smashed in half,” Wilde said. “And yet a love scene between two women is censored from the film. It’s such an integral part of this character’s journey. I don’t understand it. My heart just broke. I’m trying to get to the bottom of it; I want people to experience the entire film.”

At a party gone wrong, the scene in question (spoiler alert) shows Amy (Kaitlyn Dever) engage in a sweet, realistic, exploratory sexual experience – infused with all the awkwardness of adolescence — with a female classmate (Diana Silvers).

“Our movie is a beautiful representation of the queer experience as young people,” said Beanie Feldstein, who costars as Molly and identifies as queer. "We’re getting to the bottom of it, don’t worry. If you can watch me and Skyler [Gisondo] kiss, you can watch Diana and Kaitlyn kiss.”

Though Wilde did not mention which airline this was, she retweeted a user Monday who pointed to Delta for cutting the sex scene and "the use of the word lesbian and not legitimate expletives.”

“Censoring the word lesbian is just bats--t insane what is going on,” Wilde tweeted.